Insulating compound.



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EVALENA O. LEGGETI, OF II.iGARA FALLS, YORK.

INSULATING COMPOUND.

neonate.

No Drawing.

To all'whom ttmay concern:

Be it known that I, EVALENA O. Lneon'rr, a citizen of the United States, and a resident of Niagara Falls, in the county of-Niagara and State of New York, have made certain new and. useful Improvements in lnsulating Con'ipounds, of which the following is a specification.

My invention relates to insulating compounds, and is more especially adapted to the insulation of electric wires or cables, and it consists in the following named ingredients.

An object of my invention is to provide first of all a compound which will actas a perfect insulator.

A further object of my invention is to provide a compound which is unaffected by ordinary, variations of temperature.

A further object of my invention is to provide a compound which can be applied after the manner of paint, which will dry quickly and will not crack or chip off. i

' A further object of my invention is to-. provide a waterproof compound which will not sweat @ther objects and advantages will appear in the Elollowing specification and the novel features of the compound will be particularly pointed out in the appendedclaims.

My compound may be made by following out other processes than the one to be described. It will be understood, therefore, that the following statement of the .method of manufacturing my compound is merely illustrative of the proportions used and of the nninner in which the ingredients are brought together, and the specific example given hereinafter is only one of a number of ways of forming the compound, each one of which I would regard as being within the spirit and the scope of the invention.

In carrying, out my invention, I may take six ounces of red gum, which I dissolve in approximately two quarts of alcohol. This 1 term solution N o. 1. For solution No. 2, I dissolve 1-} pounds of gamboge in two quarts of alcohol. Three pounds of asphaltum is then dissolved in about three pints of Venice turpentine. In order to do this, the asphaltum must be heated in the turpentine until thoroughly dissolved. This, it will term solution No. 3. Solution No. 4: is made by treating nine ounccs of lac seed with about two fluid ounces of sulfuric acid.

This forms a jelly-like mass which may be Specification of Letters Patent. Patented Oct. 1t), 1891 1. Application filed January 30, 1311. Serial No. 605,503.

diluted with alcohol to the consistency of a varnish, an ounce or two of turpentine being added.

In order to get the best results, I take solution No. 3 containing asphaltum, while it is still warm, and add to it solutions Nos. 1 and 2, stirring i'neanwhile until the net is of a thicl; semi-fluid nature. Solution No.4 is then added, and the resulting product which is too thick to be worked with a brush is then thinnedwith ordinary tarpentine. The method thus described makes about three gallons of fluid insulating compound. having the consistency of ordinary varnish.

The conmound thus described is particularly useful in the insulation of electric wires. flhns it can be used in place of other insulating compounds which are more expensive, and which are subject to certain inllaences which do not affect the composition which forms the subject of the present application. The compound is applied in the ordinary manner with a brush, or the articles may be dipped into it. The compound dries quickly, and after it is dry, it is not stirliy or gummy. A relatively high heat will not affect it, that is, it will stand a high heat without melting. It will: also stand severe cold without any apparent change, where other insulating compounds will crack when applied to fabric or when applied to the metal itself, without the useof fabric. It may be bent without cracking or chipping.

One of the important features of the composition. is its perfect insulating qualities. it has been tested under high voltages, without permitting any of the current to escape. Another important feature is that it does not isweat Some varnishes of this nature give up sutlicient water to cause the rusting of the metals to which they are applied. It adheres w-ellto metals and to fabric, and is waterproof, not being affected by exposure to the elements.

As stated above, the example given is one of manyways in which this con'ipound may be made, but l have found by experiment that the proportions named produce a com pound having' better qualities than if made up in pri'n'iorthms which vary i'naterially from those stated.

t'An insulating compound comprising lac seed, gamboge, red gum, asphaltum,

prod- V Venice turpentine, sulfuric acid, ordinary, furic acid, two fluid ounces; alcohol, one turpentine, and alcohol. pint; nniil sufficient turpentine to make three 10 v 2. An insulating compound comprising gallons of the product. 1

the following ingredients in approximately 5 the proportions specified, to Wit: lac seed, f EVA'LENA LILGGETTT nine ounces; gamboge, a pound and a half; Witnesses:

red' gum, 'six ounces; -asplialtu1n,,three L. A. STANLEY,

pounds; Venice turpentine, three pints; suls SOLON C. 1(EMON. 

